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Cell Death Diff:抑制ErbB2内吞降解的去泛素化酶USP2可作为ErbB2阳性乳腺癌的治疗靶标

2020-05-06 QQY MedSci原创

ErbB2过表达定义了一种ErbB2阳性的乳腺癌亚类,其预后不良。目前的研究发现,针对ErbB2的疗法可以大大改善患者的预后,但是,现也已被证实当ErbB2发生突变时患者会出现耐药性。因此诱导ErbB

ErbB2过表达定义了一种ErbB2阳性的乳腺癌亚类,其预后不良。目前的研究发现,针对ErbB2的疗法可以大大改善患者的预后,但是,现也已被证实当ErbB2发生突变时患者会出现耐药性。因此诱导ErbB2降解可能是一种治疗ErbB2阳性乳腺癌并减少突变引起的耐药性的具有潜力的策略。

尽管目前已发现多种HSP90抑制剂可以有效诱导ErbB2降解,但在临床评估中还没有一项能够获得成功。

为了开发靶向ErbB2的新型治疗策略,研究人员探索了乳腺癌中ErbB2的内吞性降解和可逆泛素化作用。研究人员发现抑制HSP90可以通过典型的内体溶酶体途径诱导有效的泛素化和ErbB2的内吞性降解作用。USP2能够与内化的ErbB2相互作用,发挥其去泛素化酶活性防止ErbB2的溶酶体途径降解过程。

USP2的抑制剂ML364能够诱导ErbB2泛素化并加速其代谢。ML364可以增强HSP90抑制剂对ErbB2的促降解作用并提高ErbB2阳性乳腺癌细胞对抑制HSP90的敏感性。USP2与HSP90抑制剂联合可以有效抑制ErbB2阳性乳腺癌移植瘤的生长。
 

综上,本研究结果揭示了USP2可以通过拮抗ErbB2的泛素化内吞降解过程来保护ErbB2的细胞表面含量,因此,USP2与HSP90抑制剂的联合应用可能是ErbB2驱动的恶性肿瘤的一种新型的治疗策略。

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    2021-03-21 维他命
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  5. [GetPortalCommentsPageByObjectIdResponse(id=1909457, encodeId=b0aa190945eca, content=<a href='/topic/show?id=be1864e205a' target=_blank style='color:#2F92EE;'>#治疗靶标#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64720, encryptionId=be1864e205a, topicName=治疗靶标)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a885259, createdName=yourmama, createdTime=Sat Jan 30 20:11:40 CST 2021, time=2021-01-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962023, encodeId=145c19620233f, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sun Mar 21 06:11:40 CST 2021, time=2021-03-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1662183, encodeId=8cc916621834b, content=<a href='/topic/show?id=a9556923d7' target=_blank style='color:#2F92EE;'>#ErbB2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6923, encryptionId=a9556923d7, topicName=ErbB2)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=612025370618, createdName=ms7514935887898259, createdTime=Tue Nov 24 05:11:40 CST 2020, time=2020-11-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871727, encodeId=1dcc18e17273e, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Aug 23 14:11:40 CST 2020, time=2020-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1352860, encodeId=5f01135286088, content=<a href='/topic/show?id=827d9996311' target=_blank style='color:#2F92EE;'>#靶标#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99963, encryptionId=827d9996311, topicName=靶标)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Fri May 08 13:11:40 CST 2020, time=2020-05-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531614, encodeId=058c1531614fb, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Fri May 08 13:11:40 CST 2020, time=2020-05-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1575355, encodeId=d21b15e53551a, content=<a href='/topic/show?id=26d83e25254' target=_blank style='color:#2F92EE;'>#去泛素化酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37252, encryptionId=26d83e25254, topicName=去泛素化酶)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb2c16117221, createdName=mashirong, createdTime=Fri May 08 13:11:40 CST 2020, time=2020-05-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=382565, encodeId=1cf53825651d, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3d0d5314558, createdName=1902498648_44512810, createdTime=Wed May 06 22:23:14 CST 2020, time=2020-05-06, status=1, ipAttribution=)]
    2020-05-08 zhaojie88
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    2020-05-08 cy0328
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    2020-05-06 1902498648_44512810

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